22225616 has 30 divisors (see below), whose sum is σ = 50094450. Its totient is φ = 9524928.

The previous prime is 22225607. The next prime is 22225639. The reversal of 22225616 is 61652222.

It can be written as a sum of positive squares in only one way, i.e., 13249600 + 8976016 = 3640^2 + 2996^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13391 + ... + 14958.

It is an arithmetic number, because the mean of its divisors is an integer number (1669815).

Almost surely, 2^22225616 is an apocalyptic number.

It is an amenable number.

22225616 is an abundant number, since it is smaller than the sum of its proper divisors (27868834).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22225616 is a wasteful number, since it uses less digits than its factorization.

22225616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28371 (or 28358 counting only the distinct ones).

The product of its digits is 2880, while the sum is 26.

The square root of 22225616 is about 4714.4051586600. The cubic root of 22225616 is about 281.1585331539.

Adding to 22225616 its reverse (61652222), we get a palindrome (83877838).

The spelling of 22225616 in words is "twenty-two million, two hundred twenty-five thousand, six hundred sixteen".